EP2499347B1 - Kolben mit einem mantel mit ölflussschlitzen und herstellungsverfahren dafür - Google Patents

Kolben mit einem mantel mit ölflussschlitzen und herstellungsverfahren dafür Download PDF

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Publication number
EP2499347B1
EP2499347B1 EP10779634.4A EP10779634A EP2499347B1 EP 2499347 B1 EP2499347 B1 EP 2499347B1 EP 10779634 A EP10779634 A EP 10779634A EP 2499347 B1 EP2499347 B1 EP 2499347B1
Authority
EP
European Patent Office
Prior art keywords
piston
recessed
skirt
convex outer
pin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10779634.4A
Other languages
English (en)
French (fr)
Other versions
EP2499347A1 (de
Inventor
Miguel Azevedo
Andrew Leibold
Airton Martins
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tenneco Inc
Original Assignee
Tenneco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tenneco Inc filed Critical Tenneco Inc
Publication of EP2499347A1 publication Critical patent/EP2499347A1/de
Application granted granted Critical
Publication of EP2499347B1 publication Critical patent/EP2499347B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/24—Pistons  having means for guiding gases in cylinders, e.g. for guiding scavenging charge in two-stroke engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/0015—Multi-part pistons
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/04—Resilient guiding parts, e.g. skirts, particularly for trunk pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/08—Constructional features providing for lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/0015—Multi-part pistons
    • F02F3/003—Multi-part pistons the parts being connected by casting, brazing, welding or clamping
    • F02F2003/0061—Multi-part pistons the parts being connected by casting, brazing, welding or clamping by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/04—Forging of engine parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F2200/00—Manufacturing
    • F02F2200/06—Casting
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49249—Piston making

Definitions

  • oil flooding a phenomenon referred to as "oil flooding".
  • the majority of the oil is maintained toward the upper crown of the piston, and oil trickles into the ring belt area.
  • the first ring groove floods, whereupon the oil consumption control characteristic is lost.
  • a secondary standing wave of oil forms at the upper edge of the first ring groove. Exposure of this oil to the flame front decomposes and carbonizes the oil in the standing wave, generating soot and formation of carbon deposits.
  • it is desirable to maintain a continual supply of oil in the ring area of a piston too much can be detrimental to the life of the engine and can also reduce the engine performance.
  • the upper crown 16 of the piston 10 is represented here as having an upper surface 36 with a combustion bowl 38 recessed therein to provide a desired gas flow with the cylinder bore.
  • An outer wall or ring belt 40 extends downwardly from the upper surface 36, with at least one annular ring groove 42 being formed in the ring belt 40 for floating receipt of a piston ring 44.
  • the piston ring 44 when properly functioning in its free floating state, facilitates guiding the piston 10 during reciprocation within the cylinder bore, while also sealing combustion gases and inhibiting the passage of oil upwardly thereby from below the piston body 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (7)

  1. Kolben (110), umfassend:
    einen Kolbenkörper (117), der einen oberen Kronenteil (116) aufweist, der sich entlang einer Mittelachse (114) erstreckt, entlang derer der Kolben pendelt;
    ein Paar Bolzenaugen (120), das von der oberen Krone (116) herabhängt und Bolzenbohrungen (122) aufweist, die gemeinsam entlang einer Bolzenbohrungsachse ausgerichtet sind; und
    ein Paar Mantelteile (126), die auf gegenüberliegenden Seiten der Bolzenbohrungsachse angeordnet sind, wobei jeder der Mantelteile (126) eine konvexe Außenoberfläche mit gegenüberliegenden Seitenkanten aufweist, die sich bis zu einem freien Ende erstrecken, und einen vertieften Schlitz (132) aufweist, der sich radial bis in die konvexe Außenoberfläche zu einer vertieften Oberfläche (70) erstreckt, wobei die vertiefte Oberfläche (70) einen oberen Bandabschnitt (160) der konvexen Außenoberfläche von einem unteren Bandabschnitt (162) der konvexen Außenoberfläche trennt, wobei die vertieften Schlitze (132) obere (148) und untere (150) Kanten aufweisen, die sich im Allgemeinen quer zu der Mittelachse erstrecken, wobei jede der oberen und unteren Kanten einen Krümmungsradius aufweist, der sich von der konvexen Außenoberfläche hin zu der vertieften Oberfläche erstreckt,
    wobei die vertiefte Oberfläche (70) eine feste, durchgängige Oberfläche über den gesamten Schlitz (132) bereitstellt,
    dadurch gekennzeichnet, dass
    der Krümmungsradius parabolisch ist.
  2. Kolben nach Anspruch 1, wobei jeder der vertieften Schlitze (132) etwa zwischen 20 und 80 Prozent des Bereichs der Außenoberfläche des jeweils dazugehörigen Mantelteils (126) einnimmt.
  3. Kolben nach Anspruch 1, wobei der obere Bandabschnitt (160) und der untere Bandabschnitt (162) etwa zwischen 20 und 80 Prozent des Gesamtbereichs der Außenfläche des jeweils dazugehörigen Mantelteils einnehmen.
  4. Kolben nach Anspruch 1, wobei die obere (148) und die untere (150) Kante sich jeweils im Allgemeinen parallel zu einer horizontalen Ebene erstrecken, die durch die Bolzenbohrungsachse hindurch verläuft.
  5. Kolben nach Anspruch 4, wobei die obere und die untere Kante jeweils im Wesentlichen den gleichen Krümmungsradius aufweisen, der sich von der konvexen Außenoberfläche hin zu der vertieften Oberfläche erstreckt.
  6. Kolben nach Anspruch 4, wobei die obere Kante (148) oberhalb der Bolzenbohrungsachse liegt und die untere Kante (150) unterhalb der Bolzenbohrungsachse liegt.
  7. Verfahren zum Bauen eines Kolbens, umfassend:
    Bereitstellen eines Kolbenkörpers (112), der einen oberen Kronenteil (116) aufweist, der sich entlang einer Mittelachse erstreckt, wobei ein Paar Bolzenaugen von der oberen Krone herabhängt und Bolzenbohrungen (122) aufweist, die gemeinsam entlang einer Bolzenbohrungsachse ausgerichtet sind, wobei ein Paar Mantelteile (126), die auf gegenüberliegenden Seiten der Bolzenbohrungsachse angeordnet sind, eine konvexe Außenoberfläche aufweisen; und
    Ausbilden eines vertieften Schlitzes (132), der sich radial bis in die konvexe Außenoberfläche erstreckt,
    wobei der vertiefte Schlitz (132) eine vertiefte Oberfläche (70) aufweist, wobei die vertiefte Oberfläche (70) eine feste, durchgängige Oberfläche über den gesamten Schlitz (132) bereitstellt,
    wobei der Kolben der Kolben nach einem der vorstehenden Ansprüche ist.
EP10779634.4A 2009-11-13 2010-11-11 Kolben mit einem mantel mit ölflussschlitzen und herstellungsverfahren dafür Not-in-force EP2499347B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/617,772 US8474366B2 (en) 2007-08-13 2009-11-13 Piston with a skirt having oil flow slots and method of construction thereof
PCT/US2010/056335 WO2011060131A1 (en) 2009-11-13 2010-11-11 Piston with a skirt having oil flow slots and method of construction thereof

Publications (2)

Publication Number Publication Date
EP2499347A1 EP2499347A1 (de) 2012-09-19
EP2499347B1 true EP2499347B1 (de) 2019-05-15

Family

ID=43736196

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10779634.4A Not-in-force EP2499347B1 (de) 2009-11-13 2010-11-11 Kolben mit einem mantel mit ölflussschlitzen und herstellungsverfahren dafür

Country Status (7)

Country Link
US (1) US8474366B2 (de)
EP (1) EP2499347B1 (de)
JP (1) JP6013914B2 (de)
KR (1) KR101839072B1 (de)
CN (1) CN102667126B (de)
BR (1) BR112012011293A2 (de)
WO (1) WO2011060131A1 (de)

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DE102011113800A1 (de) * 2011-09-20 2013-03-21 Mahle International Gmbh Kolben für einen Verbrennungsmotor und Verfahren zu seiner Herstellung
JP6170509B2 (ja) * 2012-02-20 2017-07-26 フェデラル−モーグル・リミテッド・ライアビリティ・カンパニーＦｅｄｅｒａｌ−Ｍｏｇｕｌ Ｌｌｃ 内燃エンジン用のピストン組立体
US9611806B2 (en) 2014-11-18 2017-04-04 Caterpillar Inc. Engine piston
US9759156B2 (en) * 2015-03-04 2017-09-12 Mahle International Gmbh Asymmetric piston
EP3699418B1 (de) * 2016-08-19 2022-12-07 Andreas Stihl AG & Co. KG Kolben für einen mit spülvorlage arbeitenden zweitaktmotor und zweitaktmotor
FR3061756B1 (fr) * 2017-01-11 2019-05-10 H.E.F. Piston pour machine thermique, machine thermique comprenant un tel piston, et procedes
KR20180128533A (ko) * 2017-05-23 2018-12-04 현대자동차주식회사 엔진의 피스톤
CN107103821B (zh) * 2017-07-05 2023-07-21 石河子大学 一种流体一维雷诺方程实验装置及其实验方法
JP2021088931A (ja) * 2018-03-20 2021-06-10 日立Astemo株式会社 内燃機関のピストン
US20190331222A1 (en) * 2018-04-26 2019-10-31 Federal-Mogul Llc Piston with optimized oil ring negation
DE102019216252A1 (de) 2019-10-22 2021-04-22 Mahle International Gmbh Kolben für eine Brennkraftmaschine

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EP0072228A2 (de) * 1981-08-11 1983-02-16 Ae Plc Kolben
US5076226A (en) * 1990-02-27 1991-12-31 Atsugi Unisia Corporation Internal combustion engine piston
WO2009023702A2 (en) * 2007-08-13 2009-02-19 Federal-Mogul Corporation Piston with a skirt having oil flow slots

Also Published As

Publication number Publication date
WO2011060131A1 (en) 2011-05-19
BR112012011293A2 (pt) 2017-10-10
WO2011060131A4 (en) 2011-08-04
US20100050861A1 (en) 2010-03-04
US8474366B2 (en) 2013-07-02
KR101839072B1 (ko) 2018-03-16
CN102667126A (zh) 2012-09-12
JP2013510991A (ja) 2013-03-28
EP2499347A1 (de) 2012-09-19
JP6013914B2 (ja) 2016-10-25
CN102667126B (zh) 2015-04-15
KR20120106722A (ko) 2012-09-26

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